Gaya APA

BUDYNAS, R, G., KEITH, J. (2011). Shigley's Mechanical Engineering Design 9th ed. in SI Units (9). Singapore: Glencoe/McGraw-Hill.

Gaya MLA

BUDYNAS, Richard, G.., KEITH, J.Nisbett. "Shigley's Mechanical Engineering Design 9th ed. in SI Units". 9 Singapore: Glencoe/McGraw-Hill, 2011. Printed.